not sure how to explain everything
will take this weeks game as an example
Rams are -3...which means they are favored to win by 3 points. If you bet on LA to win -3 an they win by 2, you lose the bet. If they win by 4 or more, you win the bet. If they win by 3, then the bet is consiered a tie, or a "push" and you just get your wager back
this may help you out a bit
Discover more about plus and minus in betting, what it means, how it works, and key examples of + and - odds in sports betting.
www.sportscasting.com